Display device and manufacturing method therefor

Abstract

A display device including a display region and a frame region and configured to display an image by causing first light-emitting elements provided in the display region to emit light, the display device includes: a plurality of data lines to which data signals are supplied; a plurality of control lines arranged to intersect the plurality of data lines; a plurality of pixel circuits including the first light-emitting elements, each of the first light-emitting elements being provided at each of intersection points of the plurality of data lines and the plurality of control lines; a control circuit configured to activate the plurality of corresponding control lines; and second light-emitting elements provided in the frame region, wherein electrical signals flowing through the plurality of control lines or electrical signals flowing through nodes provided in the control circuit are input to the second light-emitting elements.

The invention claimed is: 
     
       1. A display device including a display region and a frame region provided around the display region and configured to display an image by causing first light-emitting elements provided in the display region to emit light, the display device comprising:
 a plurality of data lines to which data signals for displaying the image are supplied; 
 a plurality of control lines arranged to intersect the plurality of data lines; 
 a plurality of pixel circuits including the first light-emitting elements, each of the first light-emitting elements being provided at each of intersection points of the plurality of data lines and the plurality of control lines; 
 a control circuit configured to activate the plurality of corresponding control lines at a timing at which the data signals are supplied to the plurality of data lines; and 
 second light-emitting elements provided in the frame region, each of the second light-emitting elements being provided for each of the plurality of control lines, 
 wherein electrical signals flowing through the plurality of control lines or electrical signals flowing through nodes provided in the control circuit are input to the second light-emitting elements, 
 wherein one of a cathode electrode or an anode electrode of one of the second light-emitting elements is electrically connected to one of the plurality of control lines or one of the nodes, and the other of the cathode electrode or the anode electrode of the second light-emitting element is connected to a first constant voltage source, and 
 wherein a transistor configured to turn on or off light emitting drive of the second light-emitting element is connected between the second light-emitting element and the control lines or the node. 
 
     
     
       2. The display device according to  claim 1 ,
 wherein a control terminal of the transistor is connected to a control signal line configured to control the light emitting drive of the second light-emitting element. 
 
     
     
       3. The display device according to  claim 1 ,
 wherein the second light-emitting elements are provided between the display region and the control circuit, a light-emitting layer in a first light-emitting element of the first light-emitting elements has an equal shape and an equal size with a light-emitting layer in a second light-emitting element of the second light-emitting elements, and an opening of an edge cover of the light-emitting layer in the first light-emitting element is greater than an opening of an edge cover of the light-emitting layer in the second light-emitting element. 
 
     
     
       4. The display device according to  claim 1 ,
 wherein a plurality of kinds of light-emitting elements emitting colors different from each other are used for a plurality of the second light-emitting elements respectively provided to the plurality of control lines. 
 
     
     
       5. The display device according to  claim 4 ,
 wherein a plurality of the nodes are provided, and the plurality of kinds of light-emitting elements emitting colors different from each other are used for the plurality of the second light-emitting elements respectively provided to the plurality of the nodes. 
 
     
     
       6. The display device according to  claim 4 ,
 wherein the plurality of control lines are scanning lines and emission lines, the control circuit is a scanning line drive circuit and an emission driver, and the plurality of kinds of light-emitting elements emitting colors different from each other are used for the plurality of the second light-emitting elements respectively provided to the scanning lines and the emission lines. 
 
     
     
       7. The display device according to  claim 1 ,
 wherein the plurality of control lines are scanning lines, and the control circuit is a scanning line drive circuit. 
 
     
     
       8. The display device according to  claim 1 ,
 wherein the plurality of control lines are emission lines, and the control circuit is an emission driver. 
 
     
     
       9. The display device according to  claim 1 ,
 wherein the first light-emitting element and the second light-emitting element are organic EL elements. 
 
     
     
       10. A display device including a display region and a frame region provided around the display region and configured to display an image by causing first light-emitting elements provided in the display region to emit light, the display device comprising:
 a plurality of data lines to which data signals for displaying the image are supplied; 
 a plurality of control lines arranged to intersect the plurality of data lines; 
 a plurality of pixel circuits including the first light-emitting elements, each of the first light-emitting elements being provided at each of intersection points of the plurality of data lines and the plurality of control lines; 
 a control circuit configured to activate the plurality of corresponding control lines at a timing at which the data signals are supplied to the plurality of data lines; 
 second light-emitting elements provided in the frame region, each of the second light-emitting elements being provided for each of the plurality of control lines; and 
 a first transistor including a control terminal connected to the control line or one of nodes provided in the control circuit, and a first conduction terminal connected to one of an anode electrode or a cathode electrode of one of the second light-emitting elements, 
 wherein the other of the anode electrode or the cathode electrode of the second light-emitting element is connected to a first constant voltage source, 
 wherein electrical signals flowing through the plurality of control lines or electrical signals flowing through the nodes are input to the second light-emitting elements, and 
 wherein a second conduction terminal of the first transistor is connected to a second constant voltage source. 
 
     
     
       11. The display device according to  claim 10  further comprising:
 a second transistor including a second control terminal connected to a control signal line configured to control light emitting drive of one of the second light-emitting elements, 
 wherein a first conduction terminal of the second transistor is connected to a second conduction terminal of the first transistor, and a second conduction terminal of the second transistor is connected to one of an anode electrode or a cathode electrode of the second light-emitting element. 
 
     
     
       12. A display device including a display region and a frame region provided around the display region and configured to display an image by causing first light-emitting elements provided in the display region to emit light, the display device comprising:
 a plurality of data lines to which data signals for displaying the image are supplied; 
 a plurality of control lines arranged to intersect the plurality of data lines; 
 a plurality of pixel circuits including the first light-emitting elements, each of the first light-emitting elements being provided at each of intersection points of the plurality of data lines and the plurality of control lines; 
 a control circuit configured to activate the plurality of corresponding control lines at a timing at which the data signals are supplied to the plurality of data lines; 
 second light-emitting elements provided in the frame region, each of the second light-emitting elements being provided for each of the plurality of control lines; and 
 a first transistor including a control terminal connected to a control line of the plurality of control lines or one of nodes provided in the control circuit, 
 wherein electrical signals flowing through the plurality of control lines or electrical signals flowing through the nodes are input to the second light-emitting elements, 
 wherein a first conduction terminal of the first transistor is connected to an external power supply provided externally, and a second conduction terminal of the first transistor is connected to one of an anode electrode or a cathode electrode of a second light-emitting element of the second light-emitting elements, and 
 wherein the other of the anode electrode or the cathode electrode of the second light-emitting element is connected to a first constant voltage source. 
 
     
     
       13. The display device according to  claim 12  further comprising:
 a second transistor including a second control terminal connected to a control signal line configured to control light emitting drive of a second light-emitting element of the second light-emitting elements, 
 wherein a first conduction terminal of the second transistor is connected to a second conduction terminal of the first transistor, and a second conduction terminal of the second transistor is connected to one of an anode electrode or a cathode electrode of the second light-emitting element.